FDA Authorizes Drug to Treat New World Screwworm in Dogs and Puppies
The U.S. Food and Drug Administration (FDA) has issued an Emergency Use Authorization for Simparica TRIO to treat New World screwworm infestations in dogs and puppies.
Dogs and puppies living in the United States face a low risk of exposure to New World screwworm (NWS), a parasite that can cause severe damage and even death. However, for those who live in, travel to, or return from areas where NWS has been detected, it's essential to monitor for signs of infestation, including visible maggots or foul odors from wounds or body openings.
## New World Screwworm Infestation Risks
New World screwworm larvae can cause severe damage by burrowing into the flesh of livestock, pets, wildlife, birds, and even humans. According to the FDA, dogs living in areas where NWS has been identified should be monitored for signs of infestation. Immediate veterinary care is recommended for suspected infestations.
## FDA Authorizes Simparica TRIO
The FDA has issued an Emergency Use Authorization for Simparica TRIO (sarolaner, moxidectin, and pyrantel chewable tablets) to treat New World screwworm infestations in dogs and puppies. The agency states that Simparica TRIO may be effective for treating NWS myiasis in dogs and puppies when used as authorized, and that its potential benefits outweigh its known and potential risks.
## Prevention and Treatment
While Simparica TRIO is authorized for treating NWS infestations, it is not authorized to prevent NWS. The FDA advises dog owners to stay aware of the situation, know the signs of infestation, and have a conversation with their veterinarian if they have concerns. For more information, visit the FDA website.
## Areas with Detected NWS
NWS has currently been detected in specific areas of Texas and New Mexico. Dog owners living in these areas or traveling to them should take extra precautions to monitor for signs of infestation.
| Area | NWS Detection | | --- | --- | | Texas | Yes | | New Mexico | Yes |
The FDA continues to authorize products to give veterinarians and pet owners multiple treatment options in the unlikely event animals under their care become infested with New World screwworm.
